"He came to her and said, 'I want to stay married to you and still have an affair with Calista, his current wife," said Ross. "According to Marianne, he said 'You need to share me,' and she said 'I don't want to share,' and the marriage ended," he added.

I think that Newt's main problem is that most of the older generation already knows this stuff, but that is Mitt's strongest voting block. The way that this could hurt Newt is with the 18-30 year olds who aren't that familiar with his past. Ron Paul already captures a big portion of them, and that should increase a bit if they start to see this stuff on Newt and become more familiar with his personal past.